MONOGKAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 273 

 Leptacis striatifrons, sp. uov. 



9. Leiigtli, 1.2""". Black, shining; froiis transversely striated; thorax 

 smooth, with indications of fnrrows posteriorly; antenna?, except the 

 club, and legs wholly brownish-yellow; clnb 4-jointed, brown, the 

 joints (except the conical last joint) not, or scarcely, longer than thick. 

 Scutellnni bifoveated at base and ending in a long awl-shaped thorn 

 Metathorax covered with a dense white pubescence. Wings hyaline. 

 Abdomen subovate, shorter than the thorax, black, polished, impnnc- 

 tured, the petiole very short, transverse, pubescent. 



Habitat. — Jacksonville, Fla. 



Type in Coll. Ashmead. 



Leptacis loiigiventris, sp. uov. 



S 9. Length,!"'"'. Polished black, impunctured ; tarsi rufo-piceous. 

 Head as wide as the thorax from tegula^- to teguhe. Mandibles black. 

 Antennae 10-jointed, in 9 with a 4-jointed club, the joints, except the 

 last, a little wider than long, the last conical; twice as long as the pre- 

 ceding; funicle slender, the second joint long and slender, the first and 

 last two, short. Thorax without distinct furrows, a slight elevation or 

 prominence just in front of the scutellum, and with a sparce pubescence 

 on either side. Mesopleura smooth, i^olished, Scutellum with a tu- 

 bercle at tip, two oblique depressions at base, a median carina, and 

 sparsely covered with a silvery pile. Metathorax at base, metapleura, 

 and base of abdomen densely covered with a silvery pubescence. 

 TeguhT, black. Wings hyaline, iridescent, but slightly pubescent and 

 without a distinct fringe. Abdomen pointed-ovate, twice the length 

 of the thorax, subcompressed, and in shape not unlike the 9 in Eury- 

 fowff, but with the lateral carina quite distinct; the first segment is 

 densely pubescent, the second occupies most of the surface, the third, 

 fourth, fifth, and sixth very short, equal, the seventh conical, as long 

 or a little longer than the four preceding together. 



In the $ the antenna; are bristly, the pedicel oval, the first funiclar 

 joint minute, rounded, the second, longer than the pedicel, swollen and 

 a little curved, the club G-jointed, the first joint oval, about half the 

 length of the second; joints 2-5 long oval, the last cone-shaped, one- 

 third longer than the preceding and thinner. Tip of anterior tibite 

 and tarsi dark honey-yellow. Abdomen oblong-oval, depressed. 



Habitat. — District of Columbia and Virginia. 



Types in Coll. Ashmead and ISTational Museum. 



Many specimens. The peculiar shape of the abdomen and the cari- 

 nated scutellum readily distinguish the species. 



Leptacis breviventris, sp. uov. 



<? 9. Length, 0.6.5 to 0.80""". Black, shining, impunctured; the face, 

 very slightly shagreened just above the insertion of the autennse; lat- 

 21899— No. 45 18 



